mirror of
https://gitlab.com/pulsechaincom/lighthouse-pulse.git
synced 2024-12-30 16:06:30 +00:00
171 lines
8.9 KiB
Markdown
171 lines
8.9 KiB
Markdown
# Lighthouse: an Ethereum Serenity client
|
|
|
|
[](https://travis-ci.org/sigp/lighthouse) [](https://gitter.im/sigp/lighthouse?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
|
|
|
|
A work-in-progress, open-source implementation of the Serenity Beacon
|
|
Chain, maintained by Sigma Prime.
|
|
|
|
The "Serenity" project is also known as "Ethereum 2.0" or "Shasper".
|
|
|
|
## Lighthouse Client
|
|
|
|
Lighthouse is an open-source Ethereum Serenity client that is currently under
|
|
development. Designed as a Serenity-only client, Lighthouse will not
|
|
re-implement the existing proof-of-work protocol. Maintaining a forward-focus
|
|
on Ethereum Serenity ensures that Lighthouse avoids reproducing the high-quality
|
|
work already undertaken by existing projects. As such, Lighthouse will connect
|
|
to existing clients, such as
|
|
[Geth](https://github.com/ethereum/go-ethereum) or
|
|
[Parity-Ethereum](https://github.com/paritytech/parity-ethereum), via RPC to enable
|
|
present-Ethereum functionality.
|
|
|
|
### Further Reading
|
|
|
|
- [About Lighthouse](docs/lighthouse.md): Goals, Ideology and Ethos surrounding
|
|
this implementation.
|
|
- [What is Ethereum Serenity](docs/serenity.md): an introduction to Ethereum Serenity.
|
|
|
|
If you'd like some background on Sigma Prime, please see the [Lighthouse Update
|
|
\#00](https://lighthouse.sigmaprime.io/update-00.html) blog post or the
|
|
[company website](https://sigmaprime.io).
|
|
|
|
### Directory Structure
|
|
|
|
- [`beacon_node/`](beacon_node/): the "Beacon Node" binary and crates exclusively
|
|
associated with it.
|
|
- [`docs/`](docs/): documentation related to the repository. This includes contributor
|
|
guides, etc. (It does not include code documentation, which can be produced with `cargo doc`).
|
|
- [`eth2/`](eth2/): Crates containing common logic across the Lighthouse project. For
|
|
example: Ethereum 2.0 types ([`BeaconBlock`](eth2/types/src/beacon_block.rs), [`BeaconState`](eth2/types/src/beacon_state.rs), etc) and
|
|
SimpleSerialize (SSZ).
|
|
- [`protos/`](protos/): protobuf/gRPC definitions that are common across the Lighthouse project.
|
|
- [`validator_client/`](validator_client/): the "Validator Client" binary and crates exclusively
|
|
associated with it.
|
|
|
|
### Components
|
|
|
|
The following list describes some of the components actively under development
|
|
by the team:
|
|
|
|
- **BLS cryptography**: Lighthouse presently use the [Apache
|
|
Milagro](https://milagro.apache.org/) cryptography library to create and
|
|
verify BLS aggregate signatures. BLS signatures are core to Serenity as they
|
|
allow the signatures of many validators to be compressed into a constant 96
|
|
bytes and efficiently verified. The Lighthouse project is presently
|
|
maintaining its own [BLS aggregates
|
|
library](https://github.com/sigp/signature-schemes), gratefully forked from
|
|
[@lovesh](https://github.com/lovesh).
|
|
- **DoS-resistant block pre-processing**: Processing blocks in proof-of-stake
|
|
is more resource intensive than proof-of-work. As such, clients need to
|
|
ensure that bad blocks can be rejected as efficiently as possible. At
|
|
present, blocks having 10 million ETH staked can be processed in 0.006
|
|
seconds, and invalid blocks are rejected even more quickly. See
|
|
[issue #103](https://github.com/ethereum/beacon_chain/issues/103) on
|
|
[ethereum/beacon_chain](https://github.com/ethereum/beacon_chain).
|
|
- **P2P networking**: Serenity will likely use the [libp2p
|
|
framework](https://libp2p.io/). Lighthouse is working alongside
|
|
[Parity](https://www.parity.io/) to ensure
|
|
[libp2p-rust](https://github.com/libp2p/rust-libp2p) is fit-for-purpose.
|
|
- **Validator duties** : The project involves development of "validator
|
|
services" for users who wish to stake ETH. To fulfill their duties,
|
|
validators require a consistent view of the chain and the ability to vote
|
|
upon blocks from both shard and beacon chains.
|
|
- **New serialization formats**: Lighthouse is working alongside researchers
|
|
from the Ethereum Foundation to develop *simpleserialize* (SSZ), a
|
|
purpose-built serialization format for sending information across a network.
|
|
Check out the [SSZ
|
|
implementation](https://github.com/ethereum/eth2.0-specs/blob/00aa553fee95963b74fbec84dbd274d7247b8a0e/specs/simple-serialize.md)
|
|
and this
|
|
[research](https://github.com/sigp/serialization_sandbox/blob/report/report/serialization_report.md)
|
|
on serialization formats for more information.
|
|
- **Fork-choice**: The current fork choice rule is
|
|
[*LMD Ghost*](https://vitalik.ca/general/2018/12/05/cbc_casper.html#lmd-ghost),
|
|
which effectively takes the latest messages and forms the canonical chain using
|
|
the [GHOST](https://eprint.iacr.org/2013/881.pdf) mechanism.
|
|
- **Efficient state transition logic**: State transition logic governs
|
|
updates to the validator set as validators log in/out, penalizes/rewards
|
|
validators, rotates validators across shards, and implements other core tasks.
|
|
- **Fuzzing and testing environments**: Implementation of lab environments with
|
|
continuous integration (CI) workflows, providing automated security analysis.
|
|
|
|
In addition to these components we are also working on database schemas, RPC
|
|
frameworks, specification development, database optimizations (e.g.,
|
|
bloom-filters), and tons of other interesting stuff (at least we think so).
|
|
|
|
### Running
|
|
|
|
**NOTE: The cryptography libraries used in this implementation are
|
|
experimental. As such all cryptography is assumed to be insecure.**
|
|
|
|
This code-base is still very much under-development and does not provide any
|
|
user-facing functionality. For developers and researchers, there are several
|
|
tests and benchmarks which may be of interest.
|
|
|
|
A few basic steps are needed to get set up:
|
|
|
|
1. Install [rustup](https://rustup.rs/). It's a toolchain manager for Rust (Linux | macos | Windows). For installation run the below command in your terminal `$ curl https://sh.rustup.rs -sSf | sh`
|
|
2. (Linux & MacOS) To configure your current shell run: `$ source $HOME/.cargo/env`
|
|
3. Use the command `rustup show` to get information about the Rust installation. You should see that the
|
|
active toolchain is the stable version.
|
|
4. Run `rustc --version` to check the installation and version of rust.
|
|
- Updates can be performed using` rustup update` .
|
|
5. Install build dependencies (Arch packages are listed here, your distribution will likely be similar):
|
|
- `clang`: required by RocksDB.
|
|
- `protobuf`: required for protobuf serialization (gRPC).
|
|
6. Navigate to the working directory.
|
|
7. Run the test by using command `cargo test --all`. By running, it will pass all the required test cases.
|
|
If you are doing it for the first time, then you can grab a coffee in the meantime. Usually, it takes time
|
|
to build, compile and pass all test cases. If there is no error then it means everything is working properly
|
|
and it's time to get your hands dirty.
|
|
In case, if there is an error, then please raise the [issue](https://github.com/sigp/lighthouse/issues).
|
|
We will help you.
|
|
8. As an alternative to, or instead of the above step, you may also run benchmarks by using
|
|
the command `cargo bench --all`
|
|
|
|
##### Note:
|
|
Lighthouse presently runs on Rust `stable`, however, benchmarks currently require the
|
|
`nightly` version.
|
|
|
|
##### Note for Windows users:
|
|
Perl may also be required to build lighthouse. You can install [Strawberry Perl](http://strawberryperl.com/),
|
|
or alternatively use a choco install command `choco install strawberryperl`.
|
|
|
|
Additionally, the dependency `protoc-grpcio v0.3.1` is reported to have issues compiling in Windows. You can specify
|
|
a known working version by editing version in protos/Cargo.toml's "build-dependencies" section to
|
|
`protoc-grpcio = "<=0.3.0"`.
|
|
|
|
### Contributing
|
|
|
|
**Lighthouse welcomes contributors with open-arms.**
|
|
|
|
If you would like to learn more about Ethereum Serenity and/or
|
|
[Rust](https://www.rust-lang.org/), we are more than happy to on-board you
|
|
and assign you some tasks. We aim to be as accepting and understanding as
|
|
possible; we are more than happy to up-skill contributors in exchange for their
|
|
assistance with the project.
|
|
|
|
Alternatively, if you are an ETH/Rust veteran, we'd love your input. We're
|
|
always looking for the best way to implement things and welcome all
|
|
respectful criticisms.
|
|
|
|
If you are looking to contribute, please head to our
|
|
[onboarding documentation](https://github.com/sigp/lighthouse/blob/master/docs/onboarding.md).
|
|
|
|
If you'd like to contribute, try having a look through the [open
|
|
issues](https://github.com/sigp/lighthouse/issues) (tip: look for the [good
|
|
first
|
|
issue](https://github.com/sigp/lighthouse/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
|
|
tag) and ping us on the [gitter](https://gitter.im/sigp/lighthouse) channel. We need
|
|
your support!
|
|
|
|
## Contact
|
|
|
|
The best place for discussion is the [sigp/lighthouse gitter](https://gitter.im/sigp/lighthouse).
|
|
Ping @paulhauner or @AgeManning to get the quickest response.
|
|
|
|
# Donations
|
|
|
|
If you support the cause, we could certainly use donations to help fund development:
|
|
|
|
`0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b`
|